Ahh yes -- The Gixxerkart. Those silly Germans! They mounted a GSX1000 engine on a kart for kicks. I think that those are the same guys who made a Mini transit van into a Nurburgring fixture. Some people have too much time on their hands.
That video is about 5 years old now. I had posted it years ago. I still love to watch it every now and again. That (along with a 917/30) is an excellent example "ample" HP.
Time for new "gummis" (aka: rubber) !